Add files via upload

Author: Android-PowerUser

app/src/main/kotlin/com/google/ai/sample/MainActivity.kt

@@ -1,28 +1,23 @@
-/*
- * Copyright 2023 Google LLC
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
 package com.google.ai.sample
 
+import android.Manifest
+import android.content.Intent
+import android.content.pm.PackageManager
+import android.net.Uri
+import android.os.Build
 import android.os.Bundle
+import android.provider.Settings
+import android.util.Log
+import android.widget.Toast
 import androidx.activity.ComponentActivity
 import androidx.activity.compose.setContent
+import androidx.activity.result.contract.ActivityResultContracts
 import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.Surface
 import androidx.compose.ui.Modifier
+import androidx.core.app.ActivityCompat
+import androidx.core.content.ContextCompat
 import androidx.navigation.compose.NavHost
 import androidx.navigation.compose.composable
 import androidx.navigation.compose.rememberNavController
@@ -33,9 +28,42 @@ import com.google.ai.sample.ui.theme.GenerativeAISample
 
 class MainActivity : ComponentActivity() {
 
+    private val requiredPermissions = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU) {
+        arrayOf(
+            Manifest.permission.READ_MEDIA_IMAGES,
+            Manifest.permission.READ_MEDIA_VIDEO
+        )
+    } else {
+        arrayOf(
+            Manifest.permission.READ_EXTERNAL_STORAGE,
+            Manifest.permission.WRITE_EXTERNAL_STORAGE
+        )
+    }
+
+    private val requestPermissionLauncher = registerForActivityResult(
+        ActivityResultContracts.RequestMultiplePermissions()
+    ) { permissions ->
+        val allGranted = permissions.entries.all { it.value }
+        if (allGranted) {
+            Log.d(TAG, "All permissions granted")
+            Toast.makeText(this, "Alle Berechtigungen erteilt", Toast.LENGTH_SHORT).show()
+        } else {
+            Log.d(TAG, "Some permissions denied")
+            Toast.makeText(this, "Einige Berechtigungen wurden verweigert. Die App benötigt Zugriff auf Medien, um Screenshots zu verarbeiten.", Toast.LENGTH_LONG).show()
+            
+            // If MANAGE_EXTERNAL_STORAGE is needed (for Android 11+)
+            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R) {
+                requestManageExternalStoragePermission()
+            }
+        }
+    }
+
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
 
+        // Check and request permissions
+        checkAndRequestPermissions()
+
         setContent {
             GenerativeAISample {
                 // A surface container using the 'background' color from the theme
@@ -65,4 +93,49 @@ class MainActivity : ComponentActivity() {
             }
         }
     }
+
+    private fun checkAndRequestPermissions() {
+        val permissionsToRequest = mutableListOf<String>()
+
+        // Check which permissions we need to request
+        for (permission in requiredPermissions) {
+            if (ContextCompat.checkSelfPermission(this, permission) != PackageManager.PERMISSION_GRANTED) {
+                permissionsToRequest.add(permission)
+            }
+        }
+
+        // Request permissions if needed
+        if (permissionsToRequest.isNotEmpty()) {
+            requestPermissionLauncher.launch(permissionsToRequest.toTypedArray())
+        } else {
+            Log.d(TAG, "All permissions already granted")
+            
+            // If MANAGE_EXTERNAL_STORAGE is needed (for Android 11+)
+            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R) {
+                requestManageExternalStoragePermission()
+            }
+        }
+    }
+
+    private fun requestManageExternalStoragePermission() {
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R) {
+            if (!android.os.Environment.isExternalStorageManager()) {
+                try {
+                    val intent = Intent(Settings.ACTION_MANAGE_APP_ALL_FILES_ACCESS_PERMISSION)
+                    intent.addCategory("android.intent.category.DEFAULT")
+                    intent.data = Uri.parse("package:$packageName")
+                    startActivity(intent)
+                    Toast.makeText(this, "Bitte erteilen Sie Zugriff auf alle Dateien", Toast.LENGTH_LONG).show()
+                } catch (e: Exception) {
+                    val intent = Intent(Settings.ACTION_MANAGE_ALL_FILES_ACCESS_PERMISSION)
+                    startActivity(intent)
+                    Toast.makeText(this, "Bitte erteilen Sie Zugriff auf alle Dateien", Toast.LENGTH_LONG).show()
+                }
+            }
+        }
+    }
+
+    companion object {
+        private const val TAG = "MainActivity"
+    }
 }